/ Dictionary / Index M monocotyledonous: Meaning and Definition of Find definitions for: mon•o•cot•y•le•don•ous Pronunciation: (mon"u-kot"l-ēd'n-us), [key] — adj. belonging or pertaining to the monocotyledons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: monocotyledonous (Thesaurus) monocotyledon monocracy Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language